Refrigeration & Air-Conditioning Practice Set-3

May 18, 2021

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1. A human body feels comfortable when the heat produced by the metabolism of human body is equal to the

2. The curved lines on a psychrometric chart indicates

3. Which of the following cycles uses air as the refrigerant?

4. The capillary tube, as an expansion device, is used in

5. In a refrigeration system, heat absorbed in comparison to heat rejected is

6. The boiling point of ammonia is

7. The bank of tubes at the back of domestic refrigerator is

8. The operating pressure for refrigerating units using R-12 as a refrigerant is

9. Most thermostatic expansion valves are set for a superheat of

10. A reversible engine has ideal thermal efficiency of 30%. When it is used as a refrigerating machine with all other conditions unchanged, the coefficient of performance will be


 

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A Demrot is the founder of VideRime Online Learning, a leading engineering website. He did his BE Civil and M.Tech Structure from RGPV University, Bhopal and has been working as an Assistant Professor in a reputed college.

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